| Company | Timeline | Status | |
| PQ Holdings I Limited Director • Director | 1 Feb 2016←5 Years→2 Aug 2021 | Active | |
| PQ Silicas UK Limited Director • Director | 1 Feb 2016←5 Years→2 Aug 2021 | Active | |
| Northern Cullet Limited Director • General Counsel | 1 Feb 2016←4 Years→15 Dec 2020 | Dissolved | |
| Potters-Ballotini Limited Director • General Counsel | 1 Feb 2016←4 Years→15 Dec 2020 | Active | |
